A tap changer and a transformer arrangement comprising the tap changer
US-2023260695-A1 · Aug 17, 2023 · US
Constructional details of transformers or reactors with tapping on coil or windings
Constructional details of transformers or reactors with tapping on coil or windings · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F29/025 |
| Official title | {Constructional details of transformers or reactors with tapping on coil or windings} |
| Display label | Constructional details of transformers or reactors with tapping on coil or windings |
| Total patents | 74 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 9 |
| 2019 | 10 |
| 2020 | 6 |
| 2021 | 8 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 8 |
| 2025 | 3 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-frequency transformer and applications thereof
US-2023187126-A1 · Jun 15, 2023 · US
Transformer
US-2023170126-A1 · Jun 1, 2023 · US
Assembly for connection to a high-voltage system with adjustable impedance
US-11594368-B2 · Feb 28, 2023 · US
Techniques for a coupled inductor circuit
US-11574766-B2 · Feb 7, 2023 · US
A transformer assembly for electric grids and a related control method
US-2023025613-A1 · Jan 26, 2023 · US
Power electronics on-load tap changer with a reduced number of taps
US-2023020854-A1 · Jan 19, 2023 · US
Downhole energy harvesting
US-2023019444-A1 · Jan 19, 2023 · US
Winding unit having taps configured on the support
US-11557424-B2 · Jan 17, 2023 · US
Flexible transformer system
US-11538614-B2 · Dec 27, 2022 · US
On-load tap changer and tap-changing transformer having an on-load tap changer
US-2022392717-A1 · Dec 8, 2022 · US
Electromagnetic induction device with on-load tap changer
US-2022351897-A1 · Nov 3, 2022 · US
Downhole energy harvesting
US-11454093-B2 · Sep 27, 2022 · US
Switching power converter assemblies including coupled inductors, and associated methods
US-2022158558-A1 · May 19, 2022 · US
Tunable transformer
US-11211196-B2 · Dec 28, 2021 · US
Techniques for a coupled inductor circuit
US-2021327634-A1 · Oct 21, 2021 · US
Transformer system
US-11087913-B2 · Aug 10, 2021 · US
Molded tap changer assemblies and methods for dry-type transformers
US-11049647-B2 · Jun 29, 2021 · US
Flexible transformer system
US-2021151235-A1 · May 20, 2021 · US
Switched-capacitor converter with multi-tapped autotransformer
US-11011980-B2 · May 18, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F29/025?
- CPC H01F29/025 is the Cooperative Patent Classification code for “Constructional details of transformers or reactors with tapping on coil or windings.”
- How many patents are filed under CPC H01F29/025 (Constructional details of transformers or reactors with tapping on coil or windings)?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC H01F29/025 growing?
- Publication counts under this code: 8 in 2024 vs 3 in 2025 (latest complete years).